Dark Matter constitutes 26.8% (wikipedia) of the observable universe. So where is it? I ask this question because although it is said to be not visible. It must interact with light matter at a gravitational level. It only makes sense to me that dark matter must be all around us and throughout us. Why would dark matter avoid light matter but still interact with it? (antisocial?) Therefore if dark matter does interact with light matter (gravitationally) and therefore is contained in and around us then how did we find it?